import Vue from 'vue' 
import Router from 'vue-router'
// import component from 'vue/types/umd'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
// import Home from '../views/Home.vue'
Vue.use(Router)
// const routes = [
//   {
//   }
// ]
// const router = new Router({
//   routes
// })
// export default router
const router =  new Router({
  routes: [
    // 从斜线自动跳转到指定页面
    { path: '/', redirect: '/login' },
    { path: '/login', component:Login },
    { path: '/home', component:Home }
  ]
})

//挂载路由导航守卫

 router.beforeEach((to,from,next) => { 
//to 将要访问的路径
//from 代表从哪个路径跳转而来
//next 是一个函数，表示放行
// next() 放行    next('/login') 强制跳转

/* 判断是否是登录页面 */
 if(to.path == '/login') return next();
/* 获取token */
 const tokenStr = window.sessionStorage.getItem('token')
 if(!tokenStr) return next('/login')
 next()
})

export default router;
